4x Asus R9 280x rig with 4gb of RAM running solid 130kh/s with no HW errors and no Rejects

--thread-concurrency 16484 -g 2 -I 12 -w 256 --lookup-gap 3 --gpu-powertune 20 --gpu-engine 1190 --gpu-memclock 1500



If it helps, donations are appreciated.

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